Citation: Bergman, G.; Shoemaker, D. P. (1954). The determination of the crystal structure of the sigma phase in the iron-chromium and iron-molybdenum systems. Acta Crystallographica, 7, pp. 857-865.
Formula: Cr2.5 Fe2.5
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Cr30 Fe30 (Cr Fe)
Multiplicity: 1